太阳系八大行星,课前十分钟,阅 读 分 享,太阳系八大行星课前十分钟,小学六年级上册语文只有一个地球ppt课件,小学六年级上册语文只有一个地球ppt课件,18,只有一个地球,18 只有一个地球,3.,我们要（精致,精心）地保护地球，让地球更好地（造福,祝福）于我们的子孙后代吧（。！）,2.,如果不加（节省,节制）地开采，必将加速地球上矿产资源的（枯萎,枯竭）。,1.,在群星璀璨的宇宙中，地球就像一叶（小船,扁舟）。,我会选,3.我们要（精致 精心）地保护地球，让地球更好地（造福,我会画,我会画,只有,一个,地球,只有一个地球,美丽的地球,美丽的地球,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,地球，这位人类的母亲，这个生命的摇篮，是那样的美丽壮观，和蔼可亲。,地球,人类的母亲,生命的摇篮,比作,地球与人类及万物生存的联系密切。,打比方,状元成才路状元成才路状元成才路状元成才路状元成才路状元成才路,渺小的地球,但是，同茫茫宇宙相比，地球是渺小的。它是一个半径只有六千三百多千米的星球。在群星璀璨的宇宙中，就像一叶扁舟。它只有这么大，不会再长大。,作比较,列数字,打比方,具体生动地说明了地球的渺小。,渺小的地球 但是，同茫茫宇宙相比，地球是渺小的。它是一,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,有限的资源,拿矿物资源来说，它不是上帝的恩赐，而是经过几百万年，甚至几亿年的地质变化才形成的。,举例子,说明地球上的自然资源有限。,状元成才路状元成才路状元成才路状元成才路状元成才路状元成才路,为什么说人类如果不加节制地开采，必将加速地球上矿产资源的枯竭？,为什么说人类如果不加节制地开采，必将加速地球上矿产资,人类生活所需要的水资源、森林资源、生物资源、大气资源，本来是可以不断再生，长期给人类作贡献的。,本来,这个词可不可以去掉？为什么？,可再生资源已遭到破坏，突出了现在的不可再生性。,人类生活所需要的水资源、森林资源、生物资源、大气资源,既然地球在宇宙中那样渺小，很多资源又不能再生，那人类能不能移居到其他星球呢？,既然地球在宇宙中那样渺小，很多资源又不能再生，那人类,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,适合人类居住的唯一星球,科学家已经证明，至少在以地球为中心的,40,万亿千米的范围内，没有适合人类居住的第二个星球。,有力地说明了目前还找不到第二个适合人类居住的星球，警告人类应该保护地球。,列数字：,表明范围之大,40,万亿千米,状元成才路状元成才路状元成才路状元成才路状元成才路状元成才路,只有一个地球,只有一个地球，如果它被破坏了，我们别无去处。如果地球上的各种资源都枯竭了，我们很难从别的地方得到补充。,点题、假设：,强调地球的唯一性。,只有一个地球 只有一个地球，如果它被破坏了，我们别无去,说明方法的回顾,说明方法的回顾,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,状元成才路,指出各句的说明方法。（填序号）,A.,举例子,B.,打比方,C.,作比较,D.,列数字,（,1,）在群星璀璨的宇宙中，就像一叶扁舟。（）,（,2,）地球是一个半径只有六千三百多千米的星球。（）,（,3,）同茫茫宇宙相比，地球是渺小的。（）,（,4,）拿矿物资源来说，它不是上帝的恩赐，而是经过几百万年，甚至几亿年的地质变化才形成的。（）,B,D,C,A,状元成才路状元成才路状元成才路状元成才路状元成才路状元成才路,联系课文主要内容，讨论交流：为什么说“只有一个地球”？,（,1,）地球自然资源有限。,（,2,）目前适合人类居住的唯一星球。,联系课文主要内容，讨论交流：为什么说“只有一个地球”,保护地球资源、保护美丽的地球，你有哪些好的建议呢？,保护地球资源、保护美丽的地球，你有哪些好的建议呢？,让我们行动起来，爱护环境，保护生态，因为我们渴望拥有,一个干净的地球,让我们行动起来，爱护环境，保护生态，因为我们渴望拥有,